Increasing stick-out has what effect on amperage output and weld penetration?

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Study for the GMA Welding for Collision Repair. Prepare with multiple-choice questions, flashcards, hints, and detailed explanations. Enhance your skills and confidently tackle your exam!

Multiple Choice

Increasing stick-out has what effect on amperage output and weld penetration?

Explanation:
In GMAW, stick-out controls the arc length. When you increase the distance from the contact tip to the workpiece, the arc becomes longer and the arc resistance rises. With a power source that maintains a relatively constant voltage, this extra resistance causes the current (amperage) to drop. Less current means less heat delivered to the joint, which leads to shallower heat penetration. So increasing stick-out reduces both amperage output and weld penetration; shortening stick-out increases current and deepens penetration.

In GMAW, stick-out controls the arc length. When you increase the distance from the contact tip to the workpiece, the arc becomes longer and the arc resistance rises. With a power source that maintains a relatively constant voltage, this extra resistance causes the current (amperage) to drop. Less current means less heat delivered to the joint, which leads to shallower heat penetration. So increasing stick-out reduces both amperage output and weld penetration; shortening stick-out increases current and deepens penetration.

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